Setting item level (Calendar, Tasks etc) permissions for Mailboxes and Users with PowerShell for Exchange 2007, 2010 and 2013

Every so often I get a request to allow people to view someone else’s calendar. Usually I just tell that person to go and ask whom ever the calendar belongs to, to give them permission. This isn’t always possible though as on a few occasions where I’ve had to give access because that other person is away.

With mailboxes you can use the management tools to give access rights, but what if I just want to give the, access to a calendar or tasks for example. This is where the exchange PowerShell console comes in. I can give a user Permission to a particular object. So for example I wanted to give user1 permission to edit manager 1’s calendar, I would do the following
[powershell]Add-MailboxFolderPermission -identity manager1:\Calendar
-user user1 -accessrights Editor[/powershell]
You can use the following on all of the Outlook Exchanged based folders like so replacing <User> with the identity of the mailbox with the object you want to modify the permissions of and <delegate_user> with the username of the person of who you are giving permission to;
[powershell]Add-MailboxFolderPermission &lt;User&gt;:\Calendar -User &lt;delegate_user&gt; -AccessRights Editor
Add-MailboxFolderPermission &lt;User&gt;:\Tasks -User &lt;delegate_user&gt; -AccessRights None
Add-MailboxFolderPermission &lt;User&gt;:\Inbox -User &lt;delegate_user&gt; -AccessRights None
Add-MailboxFolderPermission &lt;User&gt;:\Contacts -User &lt;delegate_user&gt; -AccessRights None
Add-MailboxFolderPermission &lt;User&gt;:\Notes -User &lt;delegate_user&gt; -AccessRights None
Add-MailboxFolderPermission &lt;User&gt;:\Journal -User &lt;delegate_user&gt; -AccessRights None[/powershell]
You can also quickly check who has access to an object (like a calendar) by using the following cmdlet, again replacing <user> with the identity of the mailbox;
[powershell]get-mailboxfolderpermission -identity &lt;user&gt;:\Calendar[/powershell]
Hope that helps someone.

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